The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2015
Filed:
Nov. 13, 2009
Ronald Alan Falkmann, Greenwood, IN (US);
Michael T. Elliott, Carmel, IN (US);
Edward A. Lheureau, Brownsburg, IN (US);
Ronald Alan Falkmann, Greenwood, IN (US);
Michael T. Elliott, Carmel, IN (US);
Edward A. Lheureau, Brownsburg, IN (US);
Rolls-Royce Corporation, Indianapolis, IN (US);
Abstract
A gas turbine engine control system is disclosed having a fault detection system capable of detecting a high N1 condition. N1 rotational speed is measured and, in two different locations, subtracted from a target N1 value and a requested N1 value. The resultant error values are scaled by a gain that is scheduled as a function of N2 rotational rate. Each error value is accumulated with separate integrators that have independent maximum and minimum limits. The integrators are reset based upon a number of conditions. A number of additional conditions must also be satisfied for the fault detection system to trigger a fault condition. If the additional conditions are satisfied and the integrators are accumulating values, then a fault condition is set if either or both integrators accumulate a value that reaches a selected limit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile